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"Advances in Local Communications" by Dr. Charles L. Jackson

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Advances in Local Communications Dr. Charles L. Jackson November 1999 Table of Contents Executive Summary ...........................................................................................................iii About the Author ............................................................................................................... vi 1 The Human Side of the New Technologies.............................................................. 1 2 Some Quick Background.......................................................................................... 4 3 Current Availability of Big Pipes Delivering Multiple Services.............................. 6 4 Fundamental Technologies..................................................................................... 10 4.1 Software ....................................................................................................... 10 4.2 Fiber Optics.................................................................................................. 10 4.3 Integrated Electronics .................................................................................. 10 5 Emerging Systems.................................................................................................. 13 5.1 Improved Customer Premises Equipment ................................................... 13 5.1.1 Computers........................................................................................ 13 5.1.2 Networking ...................................................................................... 13 5.1.3 Customer Premises Multiplexers ..................................................... 14 5.2 Improved Transmission Pathways ............................................................... 16 5.2.1 Fiber Optics...................................................................................... 16 5.2.2 Wireless............................................................................................ 16 5.3 Impacts of the New Technologies................................................................ 17 6 Expanded Use of Communications ........................................................................ 19 6.1 Email............................................................................................................ 19 6.2 Web Applications......................................................................................... 20 6.3 Application Service Providers ..................................................................... 21 6.4 Conclusions.................................................................................................. 22 7 Implications for Telecommunication Carriers........................................................ 23 7.1 Demand........................................................................................................ 23 7.2 Implications for Metering Usage ................................................................. 23 8 Conclusions ............................................................................................................ 25 ii Executive Summary Within the next few years, high-speed Internet access, together with complementary activities such as the widespread use of packet networks in the home and office, will change our views of what constitutes a telephone call or an access line. One consequence of the widespread use of packet technology on access lines will be a great reduction in the local carrier’s ability to meter minutes of use of traffic or even to know how many simultaneous access connections the customer is using. The fundamental change will be that many offices and residences will receive service over high-speed digital access lines carrying packets of data traffic. I am not discussing unproven technologies, but rather those that are available in the market today. For example, Sprint Canada described their ATM-based packet data network service saying, [ATM service] consolidates multiple communication streams into a single network . Supports diverse applications . It’s a versatile emerging technology that can support a variety of high-speed, high-bandwidth applications concurrently over a single network interface. When a packet of data goes directly from customer premises to customer premises, neither Sprint Canada nor the access provider needs to know whether that packet is voice, video, or data. Further, if the customer is using reasonable privacy technology, the carriers will not be able to know. Many manufacturers, including Nortel, FlowPoint, Lucent, NewBridge, and others, have recently announced products that can be used to connect a telephone to the Internet. The cable industry is developing equipment that allows telephone calls to flow over the data connections used for cable Internet services. Industry today can affordably combine voice, computer data, video and any other form of information on a single packet-data connection. The likely changes in technology will improve the cost, ease of use, reliability, and other features of packet-based local access. Technological progress will also expand consumers’ demand for packet-based local access by lowering the price and improving the performance of complementary iii equipment such as computers, video equipment, home networking equipment, and digital telephone equipment. The combination of low-cost networking and always-on Internet access will provide consumers with a host of useful options. The home and small office will need communications connections to the rest of the world that are always on and that can support multiple conversations or subconnections at the same time. Consumers will benefit from these new uses and will be willing to pay for them—especially if continuing technical progress brings the price down substantially. Both businesses and consumers will expand their use of data communications. Internet connections will become essential to most organizations (if they are not so already). Such Internet connections will need to be always available with little delay (always-on) and relatively fast (download simple graphics in a fraction of a second, complex graphics in a second or two). Residential use of Internet services (a shorthand code for data communications uses) will expand greatly. The principal residential uses of the Internet for the next few years will be for email and for web applications such as shopping and gathering information. The Net is becoming our library, mall, and post office. As this happens, people who read, shop, or correspond have a greater and greater need for high-speed digital access. High-speed digital connections based on packet-switching technology meet real needs of both consumers and businesses and are available today. The conditions are right for the rapid adoption of this approach to local telecommunications. It seems reasonable that the organizations and people who benefit most from using these technologies will adopt them most rapidly. These are also the people who spend the most on telecommunications services and account for the lion’s share of the usage. Consequently, their actions will have a disproportionate impact on the contribution flow. The widespread use of high-speed packet access, often by the heaviest users of telecommunications services, will stress the current system of basing contribution on iv minutes of use of switched traffic. The heavy users will have both the incentive and the means to avoid the contribution levy. Many will install equipment and systems that make the traditional measurement of minutes of use impossible in order to gain the other benefits of these new technologies—rather than out of a desire to game the contribution regime. From a practical point of view, the adoption of packetized access implies a great reduction in the ability to meter usage in units such as minutes of use or access lines. Access providers will not be able to reliably distinguish between packets carrying voice, email, web content, or anything else. They will not be able to tell if one telephone is active in the home or if three are active. The old concepts of metering minutes of use or counting access lines will fade and disappear because they will not be feasible. In this rapidly coming world, contribution should be based on practical measurements that can be made reliability and that cannot be easily manipulated by those who would game the system. v About the Author Charles L. Jackson received his Ph.D. degree in electrical engineering from the Massachusetts Institute of Technology. Dr. Jackson is a member of the IEEE, the Internet Society, the American Mathematical Society, and Sigma Xi. He is an adjunct professor of electrical engineering at the George Washington University, where he has taught a graduate course in mobile communications. From 1982 to 1988, he was an adjunct professor at Duke University. He is a member of the U.S. Department of Commerce’s Spectrum Planning and Policy Advisory Committee (SPAC) and of the Federal Communications Commission’s Technological Advisory Committee (TAC). He has written for professional journals and the general press, with articles appearing in publications ranging from The IEEE Transactions on Computers to Scientific American to The St. Petersburg Times. vi 1 The Human Side of the New Technologies Consider a typical family a few years from now, with two parents and a teenage child. The family has two computers, one for the parents and one for the student, and high- speed Internet access over a digital subscriber line. The computers are connected
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